Turret-lathe.



H. LAUF & M. KLEBER.

TURRET LATHE.

APPLICATION FILED JUNE 8, 1910.

1,037,935, Patented Sept. 10, 1912.

3 8HEET8SHEET 1.

COLUMBIA PLANoalAPH (20., WASHINGMN. D. a

H. LAUF &M. KLEBER.

v TURRET LATHE.

APPLICATION FILED JUNE 8, 1910. v 1,037,935 Patented Sept. 10, 1912.

3 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH 60.. WASHINGTON, D. c.

H. LAUP 8: M. KLEBER. TURRET LATHE.

APPLIOATION FILED JUNEB, 1910.

1,037,935. Patented Sept. 10,1912. s sums-sum a.

v la 1 40 2 COLUMBIA PLANDGRAPH c0., WASHINGTON. n. C.

UNITED STATES PATENT OFFICE.

HANS LAUF AND MORITZ KLEIBER, OF MAGDEBURG, GERMANY; SAID KLEBER ASSIGNO'R TO SAID LAUF.

TURRET-LATHE.

Specification of Letters Patent. Patented Sept 10, 1912,

Application filed June 8, 1910. Serial No. 565,876.

To all whom it may concern:

'Be it known that we, HANS LAUF and Monrrz KLEBER, the first a subject of the King of Prussia, German Emperor, and the second a subject of the King of Saxony, both residing at Magdeburg, Germany, have invented certain new and useful Improvements in Turret-Lathes, of which the following is a specification.

This invention relates to a turret-lathe with two simultaneously working turretheads.

The essential feature of the invention consists in the arrangement according to which each turret-head is mounted upon a separate bed in such a manner that the two turret-heads can be displaced upon their beds the one independently of the other. Owing to this improved arrangement both turret-heads can work at the same time,

theturret-lathe being thus adapted for the execution of any kind of work without requiring the shifting of the work-piece. The

' work to be executed can be of the most complicated kind, such as the turning of shafts, spindles, hollow cylinders and facing in general. Herefrom follows that the time required for finishing a piece is reduced by one-half and that consequently the efliciency of the lathe is doubled with regard to that of the turret-lathes'of known construction.

The improved construction of the turretlathe, that is to say, the use of separate beds for the two turrets and the arrangement according to which one of the turrets is mounted vertically and the other horizontally and at right angles to the axis of the lathe, permits to simultaneously work short pieces by means of the tools of the two turrets which have been brought the one very closely to the other. None of the turret-lathes of known construction offers this advantage, as it is impossible to approach the tools of the two turrets so that they can simultaneously work a small piece. Further it is to be remarked that the turret-lathes of known construction present the inconvenience that very long tools have to be used which project a good distance over the axle of the turret-head; this is necessary in order to avoid collision between the two turrets. These long tools are expensive, difiicult to manipulate and they do not work very recisely. If, for example, a hollow cylin er and its flange has tobe worked and if, for example, six tools are required for this operation, the tools of the two turrets must of course collide when the turrets slide upon one and the same bed; it is consequently impossible to operate both turrets simultaneously.

If a shaft has to be turned by one continuous cut from the end to the chuck it will be impossible to simultaneously approach the two turrets if they are mounted upon one bed only, unless extremely long tools are used which project a good distance from the carriers. Such long tools permit only to cut a very thin chip and even then the work obtained is far from being perfect.

According to the present invention both turrets can operate simultaneously which is impossible with the turret-lathes of known construction having their turrets mounted upon one and the same bed. This is also the case if the two turret heads work closely at the face-plate, as with a turret-lathe improved according to the present invention the two heads can be brought quite closely to the plane object, in order to simultaneously work the same. case the revoluble turret situated at an angle of 45 with regard to the axis of the lathe andadapted to be adjusted horizontally. is particularly advantageous. The turret-head which is revolubly mounted so that it can be adjusted and which stands at right angles with regard to the axis of the lathe could further be mounted upon a cross slide. With a lathe of this particular construction the most complicated operations on hollow cylinders can be executed and inner threads could be out very easily.

The present invention can be applied to turning-lathes of any type. The driving gears can be operated by hand, semi-automatical or automatical.

In the accompanying drawings several modifications of an improved turret-lathe are shown.

Figure 1 represents in ground plan a turret-lathe having one turret-head which is adjustable and mounted horizontally at right angles to the axis of the lathe and a second turret-head revolubly mount-ed on a vertical shaft. Fig. 2 is an elevation and Fig. 3 a right hand end view of the turret-lathe Fig. 1. Fig. 4 represents a turret head mounted In the latter in trunnions and rotatable about an axis at '6) are neither hindered by the work 14: nor

turret-head 6 cuts by means of the tool 17 22. At the end of this operation theknife right angles to the trunnions; Fig. 5 is an elevation and Fig. 6 is a right hand side end view of the lathe shown in Fig. 2. Figs. 7 and 8 show in elevation and 1n plan view certain parts of the lathe according to Figs. 1 to 3 for turning a long spindle.

From Figs. 1 to 3 the simultaneous drill-. ing of a work 1 can be seen. The turrethead 3 mounted upon the bed 2 serves for drilling the work 1, and the turret-head 6 mounted upon the slide 5 and the bed?! serves for turning or surfacing the cylinder by means of the tool 7 It is easy to under stand, that at the next feed the turrethead 6 operates with its tool 8 upon the plane surface 9 of the work 1 without being impeded in the least by the revoluble tool 10 of the turret-head 3.

Figs. 4 to 6 illustrate how a hollow work is operated upon. The turning tool 11 of the turret-head 12 operates simultaneously with the turning tool 13 upon the inner part of said work 14. It would be impossible to execute this operation with the turret-head 6' (Figs. 1 to 3) as there are several other tools 11 required for turning the hub of the work 14 to its bottom surface. The turret head 12 therefore is arranged obliquely to the spindle of the lathe, the angle of obliquity being preferably 15. Thus it is possible that the four equal tools 11 (Figs. 1 to by the turret-head 3 when they are being moved toward the place where they have to work.

Figs. 7 and 8 show how a long spindle is worked and made from iron rods. The turret-head 3 carries the chuck 15 for the knife, the guide-sleeve 16 and the center 27. The turret-head 6 carries the tools 17, 8, 18 and 19.

The operation is as follows :The turrethead 3 serves for turning the spindle 20 by means of the knife-head 15 which has a collar-plate. During this turning operation the the journal 21 and then the bearing surface head 15 and'the turret-head 3 have arrived at the chuck 23. The turret-head 3 is here-- tions, the turret-head 3 is to be used as a collar-plate for the further operations.

According to the present invention the turret-head :3 can serve in lieu of the slidingpuppet of an ordinary lathe. This charac- 1361131710 feature'of the invention proves the advantage of the separate beds as otherwise the turret-head could not work along the entire length of the bed without being impeded by the ordinary head.

We cla1m.

1. An improved turret-lathe with two simultaneously operating heads comprising in combination with the main spindle, a bed guide, a turret head in said bed guide revoluble around a horizontal axis which stands perpendicular to the longitudinal axis of the mam spindle, a second bed gulre parallel with the first bed guide and a head mounted in said second bed guide so that it can revolve around a vertical axis.

2. An improved turret-lathe with two simultaneously operating heads comprising in combination with the main spindle, a bed guide, a turret head in said bed guide revoluble around a horizontal axis which stands perpendicular to the longitudinal axis of the main spindle, a second bed guide :parallel with the first bed guide and a head mounted in said second bed guide so that it can revolve around a vertical axis, said second revolving head being adjusted with regard to the longitudinal axis of the main spindle, substantially as described and shown and for the purpose set forth.

In witness whereof we have hereunto set our hands in the presence of two witnesses.

HANS LAU-F. MORITZ KLEBER. Witnesses: i I JAMES L. A. BURRELL,

HANS EYETH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, washington l). C. 

